Melissa Rivers admits the last "very normal" conversation she had with her mother Joan Rivers was joking about how "getting old sucks" and she had no idea that the following day, her life was about to change forever.

Melissa Rivers has conducted a sit-down interview with Matt Lauer for the Today show in which she reveals some chilling details about her mother Joan Rivers' death and the final moments she had with the late comedian.

Joan Rivers' death has been under federal investigation, and numerous violations and irregularities have surfaced in how the Fashion Police star was treated during the events that led to her cardiac arrest at a clinic and eventual passing.

Joan Rivers' personal throat doctor, Dr. Gwen Korovin, reportedly never performed an "unauthorized procedure" on the comedian that put her into cardiac arrest, which later resulted in her death on September 4.